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| author | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
|---|---|---|
| committer | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
| commit | 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch) | |
| tree | 4464880c571602d54f6ae114729bf62a89518057 /math/slalib/doc/ecmat.hlp | |
| download | iraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz | |
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'math/slalib/doc/ecmat.hlp')
| -rw-r--r-- | math/slalib/doc/ecmat.hlp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/math/slalib/doc/ecmat.hlp b/math/slalib/doc/ecmat.hlp new file mode 100644 index 00000000..a9be4579 --- /dev/null +++ b/math/slalib/doc/ecmat.hlp @@ -0,0 +1,34 @@ +.help ecmat Jun99 "Slalib Package" +.nf + + SUBROUTINE slECMA (DATE, RMAT) + + - - - - - - + E C M A + - - - - - - + + Form the equatorial to ecliptic rotation matrix - IAU 1980 theory + (double precision) + + Given: + DATE dp TDB (loosely ET) as Modified Julian Date + (JD-2400000.5) + Returned: + RMAT dp(3,3) matrix + + Reference: + Murray,C.A., Vectorial Astrometry, section 4.3. + + Note: + The matrix is in the sense V(ecl) = RMAT * V(equ); the + equator, equinox and ecliptic are mean of date. + + Called: slDEUL + + P.T.Wallace Starlink 23 August 1996 + + Copyright (C) 1996 Rutherford Appleton Laboratory + Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. + +.fi +.endhelp |